Laboratory assistant at the Experimental Station of E.I. du Pont Nemours & Company selects a strand of rayon yarn to be subjected to test for strength and elasticity. Tensile strength or the force required to break a fiber or yarn and 'elongation',...

"This stone building was an oil storage house and utility building. It has been commonly, but mistakenly, known since 1952 as the "change house." There is no evidence that it was ever the change house, and there is good evidence that building H-43...

Table of Contents: The story of sulphur; Youthful and progressive; Alice in a modern wonderland; Powder puff muslin; And now hosiery in a humidor pack; Uncle Sam, timberman and trail builder; The new Webster's International Dictionary;...